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lix/tests/build-delete.sh
John Ericson c11836126b Harden tests' bash
Use `set -u` and `set -o pipefail` to catch accidental mistakes and
failures more strongly.

 - `set -u` catches the use of undefined variables
 - `set -o pipefail` catches failures (like `set -e`) earlier in the
   pipeline.

This makes the tests a bit more robust. It is nice to read code not
worrying about these spurious success paths (via uncaught) errors
undermining the tests. Indeed, I caught some bugs doing this.

There are a few tests where we run a command that should fail, and then
search its output to make sure the failure message is one that we
expect. Before, since the `grep` was the last command in the pipeline
the exit code of those failing programs was silently ignored. Now with
`set -o pipefail` it won't be, and we have to do something so the
expected failure doesn't accidentally fail the test.

To do that we use `expect` and a new `expectStderr` to check for the
exact failing exit code. See the comments on each for why.

`grep -q` is replaced with `grepQuiet`, see the comments on that
function for why.

`grep -v` when we just want the exit code is replaced with `grepInverse,
see the comments on that function for why.

`grep -q -v` together is, surprise surprise, replaced with
`grepQuietInverse`, which is both combined.

Co-authored-by: Robert Hensing <roberth@users.noreply.github.com>
2023-03-08 10:26:30 -05:00

55 lines
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Bash

source common.sh
clearStore
# https://github.com/NixOS/nix/issues/6572
issue_6572_independent_outputs() {
nix build -f multiple-outputs.nix --json independent --no-link > $TEST_ROOT/independent.json
# Make sure that 'nix build' can build a derivation that depends on both outputs of another derivation.
p=$(nix build -f multiple-outputs.nix use-independent --no-link --print-out-paths)
nix-store --delete "$p" # Clean up for next test
# Make sure that 'nix build' tracks input-outputs correctly when a single output is already present.
nix-store --delete "$(jq -r <$TEST_ROOT/independent.json .[0].outputs.first)"
p=$(nix build -f multiple-outputs.nix use-independent --no-link --print-out-paths)
cmp $p <<EOF
first
second
EOF
nix-store --delete "$p" # Clean up for next test
# Make sure that 'nix build' tracks input-outputs correctly when a single output is already present.
nix-store --delete "$(jq -r <$TEST_ROOT/independent.json .[0].outputs.second)"
p=$(nix build -f multiple-outputs.nix use-independent --no-link --print-out-paths)
cmp $p <<EOF
first
second
EOF
nix-store --delete "$p" # Clean up for next test
}
issue_6572_independent_outputs
# https://github.com/NixOS/nix/issues/6572
issue_6572_dependent_outputs() {
nix build -f multiple-outputs.nix --json a --no-link > $TEST_ROOT/a.json
# # Make sure that 'nix build' can build a derivation that depends on both outputs of another derivation.
p=$(nix build -f multiple-outputs.nix use-a --no-link --print-out-paths)
nix-store --delete "$p" # Clean up for next test
# Make sure that 'nix build' tracks input-outputs correctly when a single output is already present.
nix-store --delete "$(jq -r <$TEST_ROOT/a.json .[0].outputs.second)"
p=$(nix build -f multiple-outputs.nix use-a --no-link --print-out-paths)
cmp $p <<EOF
first
second
EOF
nix-store --delete "$p" # Clean up for next test
}
if isDaemonNewer "2.12pre0"; then
issue_6572_dependent_outputs
fi